no
There is no possessive pronoun in the sentence.The only possessive in the sentence is the possessive form for the proper noun Shackelton (Shackelton's story). The only pronoun in the sentence is "I" which is taking the place of the noun for the person speaking.
Ernest shackelton was born on the 15th of Feburary 1847. He was born in a place called Kilkee, Ireland where he grew up.
shackelton
Kilkee in Ireland
probably six
ernest shackelton found ice
yes, a boy, Jimmy Ernst from Max Ernst and Luise Ernst
Ernst Hassebrauk has written: 'Ernst Hassebrauk'
Ernst Honigberger has written: 'Ernst Honigberger'
Ernst Schneider has written: 'Stiftung Ernst Schneider'
Ernst Sattler's birth name is Roth, Ernst.
Ernst Brengt's birth name is Ernst Brengk.