The spelling of "haddest a claim" may seem confusing, but it can be broken down using the International Phonetic Alphabet (IPA). "Haddest" is pronounced /ˈhædɪst/, with the short "a" sound in "had" and the "st" ending indicating the second person singular past tense of "have." "A" in this context is an archaic way of saying "one," and is pronounced /ə/. "Claim" is pronounced /kleɪm/, with a long "a" sound and the "m" indicating a noun. Therefore, "haddest a claim" means "you had a claim."