Sentence examples for it isn't unknown from inspiring English sources

He is a particularly aggressive parent (it isn't unknown for him to have a go at other parents if he thinks their children are upsetting his son).

But sooner or later a deputy may wonder if it is time to step up and it isn't unknown for deputy to gun for the top job.

Similarly, on mornings after the annual Beltane fire festival on Calton Hill, it isn't unknown for Charley Mallalieu, the gardener of Regent Gardens, to encounter "cheery souls wandering about in a chemically-induced haze" who have somehow found the energy to climb over the wall that separates the hill from the gardens, and got stuck.

And it isn't unknown for a child to forget the racket in the rush of getting to the lesson on time!

At times, when strolling along its admittedly wide pavements, it is not unknown for pedestrians to run into a pushchair traffic jam.

It is not unknown for trips and conferences in exotic locations to also be offered.

Indeed, it is not unknown for the Financial Ombudsman Service to receive complaints about the complaints-handling firms.

It is not unknown for people in a critical condition with the disease to recover.

And it is not unknown for new teams to do well in the Champions League.

It is not unknown for two different operators to give you two different numbers for the same listing -- both wrong.

Where they smoke in restaurants and where it is not unknown for people to get roaringly drunk at dinner parties.