in English is:

historicity

Mutations

Soft:(no mutation)
Nasal:(no mutation)
Aspirate:(no mutation)

Use

yr hanesyddoldeb hwn
fy hanesyddoldeb i
dy hanesyddoldeb di
ei hanesyddoldeb ef/o
ei hanesyddoldeb hi
ein hanesyddoldeb ni
eich hanesyddoldeb chi
eu hanesyddoldeb nhw/hwy
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