Thanks, Helmut and Anton.
I have read that it was very common in scholarly circles for fathers to teach their sons to write if they did not have the resources to hire a tutor.
I looked up some of my samples that use this style of "i" (extra-long straight serif, straight stem) and they're not common.
Many have small serifs or slightly curved stems, or curved serifs on the right-hand side, similar but not similar enough.
The ones that seem closest to George Marci's style of "i" are in manuscripts thought to be from the University of Basel, a Dominican monastery in Basel, a convent in Brussels, somewhere in Vienna, and five manuscripts with unknown origins. There's also an early legal document (1269) from Schaunberg with "i" written the same way and which also has the small rounded n.
It's not much to go on, but I'll file it for future reference.
I have read that it was very common in scholarly circles for fathers to teach their sons to write if they did not have the resources to hire a tutor.
I looked up some of my samples that use this style of "i" (extra-long straight serif, straight stem) and they're not common.
Many have small serifs or slightly curved stems, or curved serifs on the right-hand side, similar but not similar enough.
The ones that seem closest to George Marci's style of "i" are in manuscripts thought to be from the University of Basel, a Dominican monastery in Basel, a convent in Brussels, somewhere in Vienna, and five manuscripts with unknown origins. There's also an early legal document (1269) from Schaunberg with "i" written the same way and which also has the small rounded n.
It's not much to go on, but I'll file it for future reference.

