Their tombstone has the following inscription, where I transliterate the Hebrew
p"n
heh khet"resh shlomo ben heh khet"resh gerson alexander
gadal beshem tov veniftar beshem tov ben pe"dalet
shana caf"gimel tamuz tav resh ain alef lamed pe kuf
haisha marat rivka alexander bat harav resh' yehuda leib pinner niftera bat
ain"khet shana yod"gimel adar rishon tav resh" ain gimel lamed pe " kuf
Tav Nun Tsadik Bet Heh
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Hier Ruehen
unsere lieben Eltern
Salomon Alexander
geb. 9. Dezember 1826
gest. 18 Juli 1911
Rebecka Alexander
geb. Pinner
geb. 6 Marz 1835
gest. 6. Februar 1913