The Relics
At the end of 1244, during an illness, Louis took the cross. He had already been much distressed by the plight of John of Brienne, emperor at Constantinople, and bought from him the crown of thorns, parts of the true cross, the holy lance, and the holy sponge. The Sainte Chapelle in Paris still stands as a monument to the value of these relics to the saintly king.
The Crown of Thorns

Baldwin sent 22 (theres that number again)
At the same time, a collection of relics of Christ was kept in the same chapel.
Amongst them we can enumerate: the cross, the nails, the lance, the sponge, the cane,
the crown of thorns, the shroud of the tomb, the sandals, the towel with which He dried
the apostles’ feet, the tunic, the stone from the tomb and the sudarium7. In 1203, Robert
de Clari8 points out not only the presence of the Mandylion and many of the
aforementioned relics, but he also mentions separately two more not belonging to
Christ: the Virgin’s veil and John the Baptist’s head.
The other church concerned with the Shroud, Blachernae, was at the other side
of the town, to the north.
http://www.shroud.com/pdfs/n56part5.pdfMoreover, Baldwin II sent a group of 22 relics from Constantinople to his
relative Louis IX of Fra nce between 1239 and 1242:
1. - The crown of thorns as the most valuable
2. - A piece of the cross
3. - Blood of Christ
4. - The nappies of the infant Jesus
5. - Another piece of the cross
6. - Blood from a picture of Christ
7. - The chain
8. - Sacred cloth inserted in a picture (Mandylion)
9. - Stone from the tomb
10. - Milk of the Virgin Mary
11. - The spear
12. - A victorious cross
13. - The purple mantle
14. - The reed
15. - The sponge
16. - A part of the shroud (sudarii) in which Christ's body was wrap ped in
the sepulchre
17. - The towel used to dry the Apostles' feet
18. - Moses’ rod
19. - A part of John the Baptist’s head
20. - St. Blas’ head
21. - St. Clement’s head
22. - St. Simeon’s head.
Except for the milk of the Virgin, the other 21 were mentioned in the Pharos
collection. The king of France was interested in collecting the relics from the Passion,