Final answer:
Celtic languages had minimal influence on Old English, with most vocabulary and grammar stemming from Germanic roots. Borrowed words are usually not pronouns or family terminology.
Step-by-step explanation:
The influence of Celtic languages on Old English is generally considered to be minimal. During the Anglo-Saxon settlement of Britain, the Germanic tribes that would eventually give rise to the English language absorbed very little from the Celtic languages spoken by the indigenous populations.
While there may be some place names and river names of Celtic origin, these are exceptions rather than the rule. Most of the core vocabulary and grammatical structures of Old English are derived from Germanic roots. Words that are more likely to be borrowed from other languages typically include cultural items, technology, advanced concepts, and sometimes food, rather than pronouns or words for close family members, which tend to remain consistent within language families.