Cheers Yorkie. An easy one: Boniface, Pancras, Servatius and Sophia are collectively known as what, and are feared by whom ?
The Ice Saints? Feared, presumably, by farmers as they are saints for consecutive days in May during the last period for spring frosts.
That's the one BB. The first three are the so called Ice Saints because their 3 feast days, 13th, 14th and 15th of May meteoroligally coincide with a drop in temperatures - more noticeable in central Europe than in Britain. The night of the 16th is that of St. Sophia - the 'Ice Woman', which is often the worst of all. The actual Ice Saints - or 'Eisheiligen' can come slightly earlier, or later, depending on the year, but are still known as such. When I first came to Germany I was unaccustomed to such a thing as possible frost in mid May - and was often caught unawares. I could not, initially, understand why the German gardening season started so late. Needless to say there is a meteorological explanation which has nothing to do with saints. Over to you.