Hi Freda, Salu and Charles Penn are the only ones I have in Magaiagi but it is only a partial list. The others could still be there
Tufuiopa in Ifiifi St, is a closed cemetery, now under Lands and Survey Dept control, previously under Police Dept. This may be the one you mean, but there are no Penns included. However the lady who did the transcription remarked, in 1975, that this cemetery was "a genealogist's nightmare. Many many tombstones are smashed and/or missing. Pieces of the tombstones lie everywhere or all mixed up in piles".