Maps of Holland’s Changing Coast

This section contains three kinds of maps. The Growing County map traces the shifting coastline and expanding comital territory across four centuries, from the first Gerulfings to the height of Floris V's power. The thematic maps make single arguments that prose cannot easily carry: the gap between legal territory and real power, the overlap of secular and ecclesiastical authority, the slow creation of land from water. The per-book maps accompany each novel individually, charting the journeys and the places that belong to each volume's plot. Treat them as a companion to the novels and as a historical resource in their own right. Every marker on every map links back to the relevant book page or background article.

This is the world of Book I, and it is not the Netherlands. Ninth-century Frisia was a far longer coastal strip of salt marsh, creek, peat and dune, where the line between land and water shifted twice a day. There were no dykes; people lived on mounds raised by hand above the reach of the flood.

The shaded districts are the fief of Godfrid the Dane: West Frisia along the coast, Nifterlake on the Vecht, Lek and IJssel, and Teisterbant with Tiel at its heart. Frankish emperors granted such land to Danish leaders in the hope of making the wolf a shepherd. Almost exactly these districts would be held, within a generation, by Gerulf's son Waldger.

Read the rivers as roads, not as borders. Here lay the mouths by which the Northmen sailed into the heart of the empire, and no king was ever strong enough to close that door. Four points carry the story: Egmond, Gerulf's mound on a poor coast; Herispich — later Spijk — where Godfrid was lured to an assembly in 885 and killed; Tiel, his stronghold and his registers; and Deventer, where the bishop of Utrecht kept his seat while Utrecht itself lay half abandoned.

One line of the legend has changed, and it carries the whole story. What was the fief of a Danish king is now the territory of Gerulf: the coast, the Vecht, Lek and IJssel, and Teisterbant on the great rivers.

It does not stay whole. At Gerulf's death the green divides between his sons. Waldger takes the rich river districts, with the rising toll town of Tiel as the crown jewel; Dirk keeps West Frisia — the wet, poor coastal strip of Kennemerland. It is the finest irony of this history that the poorest portion proved the most lasting. Waldger's branch died out within a few generations and his river lands fell piece by piece to king and church. The line that endured was the youngest son's, on the worst ground.

The pink is new. Hamaland is the country of Everhard Saxo — Saxon count, styled margrave of Frisia, builder of ring-forts, and once Gerulf's fellow conspirator against Godfrid. It straddles the IJssel, presses hard against Waldger's border and encloses Utrecht and Dorestad.

Two things on this map are new, and both are the story.

The first is the yellow. Dirk's parchment names him count of the whole coast, set down by a king all the way to the furthest terp in the north — but the yellow is territory on paper only. Beyond Alkmaar the land breaks apart into lakes, marsh and distant terps, and there live Frisians who will know no count: they pay him nothing and keep their own right, old and hard as the ground. Alkmaar is the edge. No man holds all that stands on his parchment.

The second is that the green is no longer one colour. The rich river districts are his brother Waldger's now, and beyond them lies the pink of Hamaland, where a dead man stands between the houses — Everhard Saxo, killed by Waldger in 898. In this book that debt is settled with a bride.

Then read the small names along the coastal strip: Alkmaar, Katwijk, Valkenburg, Leiden, Naaldwijk, Vlaardingen. These are Dirk's posts — a rampart at the mouth of the Meuse, a watchtower on the Old Rhine — set down one by one in a poor, empty land. Post by post, he is giving it a skeleton.

Set this map beside the one for Book III and what strikes you is what has gone.

The river districts are no longer coloured at all. In 939 the rich branch of the house — Waldger's line, with Teisterbant, Tiel and the toll rights at Muiden — chose the losing side in the Lotharingian revolt, and after the battle at Andernach it vanishes from history in a single season. The monastery at Tiel passed to the bishop of Utrecht. Hamaland has gone with it. What is left of Gerulf's inheritance is a coast, and the theme of the whole series is written in that absence: the sword robs, but does not build.

And half of what remains is yellow. Beyond Alkmaar the count's word simply ceases to hold — not through any war, but through something stiller and more humiliating: a border at which authority evaporates. Texel, Den Burg and Medemblik lie inside a title and outside a grip. So read the green as the entire county: a ribbon of dune, creek and peat from Alkmaar down to the Meuse. It is from here that Dirk II went south to marry a great-great-great-great-granddaughter of Charlemagne.

New on this map is the purple in the south-west: Flanders, the house of Dirk II's wife. Hildegard's marriage brought this coast a pedigree reaching back to Charlemagne — and with it entanglement, the grasp at Ghent, and a lifetime spent between Flemish, French and imperial interests.

Now look at the water between. A hundred miles of open sea separate the count's north from his Flemish south, and that emptiness is the weakness his enemies use: a house that can bleed in two places at once. In 969 Dirk goes into the Zeeland islands — not by pitched battle but by tide and channel, with skippers who know the water from birth. Schouwen is the link that matters, with its old ring fort at Burgh. Then he stops, at Zonnemaire, and takes not one island more: a border, he says, is not where your strength stops winning but where it stops being able to hold.

The green itself scarcely alters. What grows is Egmond, where a small foundation becomes a rich abbey and a saint is raised onto a golden altar — and with it the long quarrel with Utrecht, in whose diocese Egmond lay.

The purple in the south-west is where Arnulf came from, not what he ruled. He was born in Flanders and grew up there; "of Ghent" is a birthplace, not a title. What he inherited is the narrow green ribbon along the coast.

Its true size can be measured. When the emperor mustered his horsemen in 983, West Frisia owed twelve — where other territories sent forty, or a hundred. The yellow to the north is what it has been for three generations: a title without a grip.

But the quarrel that killed him was not in the yellow. Later tradition placed Arnulf's death at Winkel in the far north, complete with a miracle of sweet water welling up at his prayer. That story was written some two hundred and fifty years later, for counts who needed an ancient Frisian enmity. The oldest sources say only that he fell in the autumn of 993, fighting his own subjects, somewhere in newly reclaimed ground — along the Old Rhine, or near the mouth of the Meuse.