は自分の名前さえ書くことが

can even write one's own name

→ は
phrase Rare #39,514
can even write one's own name In the example sentences, this appears in the negative pattern 自分の名前さえ書くことができない, meaning “cannot even write one's own name.” は marks the topic, さえ means “even,” and ことができない means “cannot.”
JA: 彼は自分の名前さえ書くことができない。
EN: He can't even write his own name.

その少年は自分の名前さえ書くことができなかった

The boy couldn't even write his own name.

トムは自分の名前さえ書くことが出来ない

Tom can't even write his own name.

トムは自分の名前さえ書くことができないんだよ

Tom can't even write his own name.

ロミオは自分の名前さえ書くことができないんだよ

Romeo can't even write his own name.